wpsnoop: fix Mail Next plugin conflicts, errors & issues

When the plugin Mail Next conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.


Discover which shortcodes wp-options PHP functions database tables and files are created by Mail Next, plus learn which plugins and/or themes could be in conflict with Mail Next.


Troubleshooting theme and plugin conflicts is easier when you know what Mail Next leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for Mail Next

Get professional support for Mail Next here

When you need professional help with WordPress: get help here


What does Mail Next version 1.0 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Mail Next to perform differently in your installation, previous versions before 1.0 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 1.0 of Mail Next behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this plugin but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for Mail Next by clicking here.

Our testing covered the free version of this plugin there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Which new files does Mail Next add to WordPress?

This section will populate with a table showing an icon, size and filepath.

Type & Path Size Conflicts
wp-content/plugins/mail-next/ 293.36kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/css/ 24.44kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/css/admin.css 5.10kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/css/chosen.min.css 10.78kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/css/datepicker.css 6.04kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/css/mailin-front.css 2.51kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/images/ 8.42kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/images/logo.png 8.42kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/ 55.87kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/cache/ No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/jquery.validate.min.js 20.57kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/logo.png 8.42kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/logout.php 310.00B No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/mfp-first-acp-page.php 7.77kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/mfp-form-acp-page.php 8.53kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/mfp-functions.php 804.00B No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/mfp-market-acp-page.php 6.90kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/resultat.php 1.66kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/includes/synchronise.php 933.00B No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/jquery.validate.min.js 20.57kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/mailnext.php 1.70kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/readme.txt 2.74kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/screenshot-1.png 75.35kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/screenshot-2.png 62.34kB No known conflicts with other themes or plugins.
wp-content/plugins/mail-next/screenshot-3.png 41.92kB No known conflicts with other themes or plugins.

Which new shortcodes does Mail Next add to WordPress?

ShortCode   Known Plugin or Theme conflicts
[Form] The Form shortcode has potential conflicts with at least 3 other plugins or themes.

Note: We have not yet checked to see if these shortcodes work as expected in pages, posts, sidebar widgets, or when set as the page title, in content, in the excert, in menus or anywhere else within a WordPress installation. A shortcode could produce errors due to parameters added when it is used, or if the plugin is updated and the format of the shortcode has changed.

Which new database tables are created by the WordPress plugin Mail Next?

Which new options are added to the wp-options table by Mail Next?

What new PHP functions does Mail Next declare when it is active?

Using Mail Next from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.


How to install Mail Next from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp plugin install mail-next


How to activate Mail Next from the command line with WP-CLI

To immediately activate Mail Next after WP-CLI downloads the latest version you can use the following command:

wp plugin install mail-next --activate


How to reinstall Mail Next from the command line with WP-CLI

To force a reinstallation of Mail Next which overwrites the current plugin without asking for confirmation you can use the following command:

wp plugin install mail-next --force


How to update Mail Next to the latest version from the command line with WP-CLI

wp plugin update mail-next


How to delete Mail Next from the command line with WP-CLI

wp plugin delete mail-next

Where can you download earlier versions of Mail Next?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of Mail Next from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in Mail Next

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with Mail Next. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.